Troubleshooting Guide
311
Digital Certificate Problems
Symptom Cause Action
The certificate import button is
disabled.
SSL communication is disabled. Create a self-signed certificate and enable SSL.
The certificate details button is
disabled.
The certificate cannot be imported. The time setting is incorrect. Confirm validity period of the certificate as well as
the time setting of the device.
The certificate file is incorrect. Confirm whether the password is correct.
Confirm whether the file type is PKCS#7/#12 or
x509CACert (extension: p7b/p12/pfx/cer/crt).
Confirm whether the attribute information (key
Usage/Extended key usage) of the certificate to be
imported is set correctly.
The browser is incorrect. Use Internet Explorer.
016-404 is displayed when trying to
use security functions that require
certificates.
The certificate data stored in
internal memory is either deleted,
corrupt, or is not readable.
Import the certificate and enable the security
settings again.
A certificate cannot be set with
"Certificate Details".
The validity period is invalid. The validity period of the certificate is invalid.
Confirm whether the time setting of the machine is
correct, and whether the validity period of the
certificate has expired.
The certificate path is invalid. The certificate chain (path validation) of the
imported certificate may not be correctly validated.
Confirm whether all of the high-level certificates
(Trusted/Intermediate) have been imported and are
not deleted, and whether the validity period has
expired.
Although a certificate was imported,
it is not displayed when selecting
with "Local Device".
The type of the certificate is
incorrect.
To import a certificate for use with the device (own
device), import the secret key and a certificate of
the PKCS#12 (p12/pfx) format as a pair.
Server validation is not operating
correctly.
The certificate chain is incorrect
when importing.
Although importing a root certificate (Trusted) to
use for server authentication, an Intermediate
certificate may be required when validating the
path.
When executing a certificate file with the
certification authority, create the certificate with a
format including all paths and then import that
certificate.
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